Improvement in valves



Patented Novp 7,1871.

UNITED STATEs PATENT OFFICE.

SAMUEL J PEET, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN VALVES.

Specification forming part of Letters Patent No. 120,664, dated November7, 1871 antedated October 21, 1871.

To all whom it may concern:

Be it known that I, SAMUEL J. PEET, of Boston, in the county of SuHolkand State of Massachusetts` have invented a new and useful Improvementin Valves; and do hereby declare the same to be fully described in thefollowing speciiication and represented in the accompanying drawing,which is a central and vertical section of a valve as provided with myinvention.

My invention has reference to that class of 'valves which is employed insteam and waterpipes for shutting off the iiowage of such steam orwater; and consists in combining with the main valve an auxiliaryautomatic valve, or means whereby the water as well as the sediment maybe discharged from the chamber of the main valve whenever the plug ofsuch main valve may be closed, thereby preventing the undue collectionof sediments inthe main valve, as well as the freezing of such watertherein in the winter.

In the accompanying drawing I have shown a steam or water-valve asconstructed in accordance with Letters Patent granted to me on January1,1867, and with the same lhave embodied :my present improvement. As theconstruction and operation of such valve is fully described in my saidlpatent no detailed description thereof is deemed necessary.

In carrying out my present invention I combine with such a valve orother steam or watervalve an automatic means for freeing the mainvalve-chamber of any water or sediment that may have been left ordeposited therein when the Aflowage of the water may be stopped and theplug closed upon its seat.

In the said drawing, A denotes a cylindrical projection which extendsdown at a right angle to the main valve-case B, and may be either castin one piece therewith or separately therefrom, and afterward suitablyaihxed thereto. The said cylinder A is open at both of its ends, itsupper end communicating with the valve-chamber c of the main valve, thelower surface of such chamber being slightly tapering toward its middle,as shown in the drawing. b is the auxiliary valve-chamber formed withinthe said cylinder, the upper end of the said chamber constituting a seatfor the auxiliary valve or plug e, whose stem is scored longitudinallyso as to form channels for the water to flow down, and extends up intothe main valvechamber. The said plug e is forced against its seat bymeans of a coiled spring, f, one end of which rests against the lowerpart of the plug and the other against the upper end of a screw-cap, g,screwed into the lower end of the cylinder A, such cap having a hole, h,made axially through it, as shown in the drawing, to allow of thedischarge of the water or sediment flowing into the chamber b.Furthermore, the said auxiliary plug may have a rubber or leatherwasher, i, between its face and that ofV its seat, the. same being toinsure a perfectly watertight connection, such plug also having verticalchannels made through it to allow of the iiowage of the water throughthe chamber b.

Having described the construction of my said improvement, its operationis as follows: When the main plug is raised from its seat to allow ofthe free iiowage of the water through the valve the spring f forces theauxiliary plug c closely against its seat, and so as to maintain aperfectly tight connection. When the main plug is being forced down bythe screw in order to shut ofi' the iiowage of the water or liquid thelower end of such plug presses against the stem of the auxiliary plugand forces the latter away from its seat, and thus enables the sedimentand water in the chamber of the main valve to ilow through the auxiliaryvalve and escape.

Having described my invention, what I claim 1s- The combination of anauxiliary automatic or selfclosing valve, c, and its seat and opening inthe shell A, with the main valve and its adj uncts, the said parts beingarranged to operate together in manner as described.

SAMUEL J. PEET.

Witnesses:

F. P. HALE,

E. c. HALE. (167)

